View Full Version : Nitrogen in tires??

03-21-2007, 03:17 PM
Hey people i just put some nitrogen in my dunlop winter sport m3, and feel great just wanted to see if anyone else has done it?

03-21-2007, 03:18 PM
how do you do this? and where do you get nitrogen from? and isnt nitrogen flammable?

03-21-2007, 03:19 PM
and what does this do?

03-21-2007, 03:23 PM
is this a joke

03-21-2007, 03:25 PM
No joke, theres a thread somewhere about this. Sidewall flex can get the tires hotter then most people think. But why use nitrogen when compressed air is all but free? There were some good qualities about it but I forget. Someone?

03-21-2007, 03:25 PM
Because nitrogen doesn't contain as much water as oxygen it doesn't expand and contract as greatly as oxygen, so it keeps your tire pressure consistent for longer periods of time. On top of that, most people here with stock sized tires (195-65-15) tend to keep pressure set at 32-35 lbs, whereas with nitrogen you can set it at 30 lbs and still get the same effect. I don't remember all there is to it, but my friend has it in his tires and said that his gas mileage has increased quite a bit, about 40-50 miles per tank. If you can get it done for cheep it's definitely something you'd want to do because AFAIK there are no downsides to it, price aside.

03-21-2007, 03:28 PM

03-21-2007, 03:30 PM
i've always heard this is possible, but EXTREMELY theoretical for any benefit.

Nitrogen, purified nitrogen, has no imperfections like compressed air. Standard air has moisture, contaminants, etc. Nitrogen does not lose compression at near the rate of normal compression. Pro stock, F1, Nascar...pretty much all serious racing uses nitrogen for its consistency, and lighter rolling resistance (fuel economy).

Where did you find it done, and how much was it?

03-21-2007, 03:33 PM
i did it @ canadian tire(since i live in Canada) when i went for my emissions test and it was only $20 and they fill it whenever i want for free only downfall is that i have green caps on my tires

03-21-2007, 03:43 PM
so what if you used helium? wouldnt that make it like your car is lighter?

03-21-2007, 03:48 PM
If you can get it done for a good price it's worth it. Pretty much guarantee you'll get better gas mileage, your tire pressure will be more consistent, and generally you're tires will last longer.

Oxygen will naturally degrade your tires over time, pure nitrogen will not, or it may but at a FAR slower rate.

03-21-2007, 04:03 PM
I'm not sure if they do it anymore, but Costco used to fill up your tires with nitrogen for free if you were a member. Didn't even need to buy tires from them. I did it once a few years ago, but can't recall if there were any benefits. Might be worth checking out if you have a Costco in your area.

03-21-2007, 04:13 PM
costco fills them up with nitrogen... i think it has something to do with it being cooler or something, as in temperature... cause i know that they fill up airplane tires with nitrogen as well to keep them from bursting at touch-down

03-21-2007, 04:15 PM
Whoops accidental post

03-21-2007, 04:47 PM
Discount Tire has it. Its what I run

03-21-2007, 05:29 PM
It was busted on Mythbusters.

03-21-2007, 06:00 PM
What was busted on Mythbusters?

03-21-2007, 06:31 PM
okayyyy...this will work.. but the only time its really usefull is if you are going auto-xing or if you drive a race car. you wont notice any difference in your tires for a normal drive.

03-21-2007, 06:39 PM
My buddy gets his tires filled with Nitrogen for free whenever necessary at Costco. I'm gonna do it too.

03-21-2007, 11:08 PM
My work does it (costco) supposedly the molecules are larger than oxygen so the air wont leak out as easily

03-21-2007, 11:14 PM
My work does it (costco) supposedly the molecules are larger than oxygen so the air wont leak out as easily

:werd: Costco has being filling my tires with nitrogen for 4 years...I always assumed it was because of this.

03-22-2007, 01:17 AM
laugh out fvcking loud

03-22-2007, 08:14 AM
My lil brother is a helicopter mechanic in the NAVY, and he told me that they will the tires on the chopters up with nitrogen.